| 单词 | extinctions |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔extinction〕Mass extinctions of prehistoric animals are known to have occurred.我们知道发生过史前动物大规模消亡的情况。韦氏高阶〔extinction〕We know of several mass extinctions in the earth's history.我们知道地球历史上出现过几次大规模的灭绝。牛津高阶 |
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